1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
|
; Test 64-bit ANDs in which the second operand is constant.
;
; RUN: llc < %s -mtriple=s390x-linux-gnu | FileCheck %s
; Use RISBG for a single bit.
define i64 @f1(i64 %a) {
; CHECK-LABEL: f1:
; CHECK: risbg %r2, %r2, 63, 191, 0
; CHECK: br %r14
%and = and i64 %a, 1
ret i64 %and
}
; Likewise 0xfffe.
define i64 @f2(i64 %a) {
; CHECK-LABEL: f2:
; CHECK: risbg %r2, %r2, 48, 190, 0
; CHECK: br %r14
%and = and i64 %a, 65534
ret i64 %and
}
; ...but 0xffff is a 16-bit zero extension.
define i64 @f3(i64 %a, i64 %b) {
; CHECK-LABEL: f3:
; CHECK: llghr %r2, %r3
; CHECK: br %r14
%and = and i64 %b, 65535
ret i64 %and
}
; Check the next value up, which can again use RISBG.
define i64 @f4(i64 %a) {
; CHECK-LABEL: f4:
; CHECK: risbg %r2, %r2, 47, 175, 0
; CHECK: br %r14
%and = and i64 %a, 65536
ret i64 %and
}
; Check 0xfffffffe, which can also use RISBG.
define i64 @f5(i64 %a) {
; CHECK-LABEL: f5:
; CHECK: risbg %r2, %r2, 32, 190, 0
; CHECK: br %r14
%and = and i64 %a, 4294967294
ret i64 %and
}
; Check the next value up, which is a 32-bit zero extension.
define i64 @f6(i64 %a, i64 %b) {
; CHECK-LABEL: f6:
; CHECK: llgfr %r2, %r3
; CHECK: br %r14
%and = and i64 %b, 4294967295
ret i64 %and
}
; Check the lowest useful NIHF value (0x00000001_ffffffff).
define i64 @f7(i64 %a) {
; CHECK-LABEL: f7:
; CHECK: nihf %r2, 1
; CHECK: br %r14
%and = and i64 %a, 8589934591
ret i64 %and
}
; ...but RISBG can be used if a three-address form is useful.
define i64 @f8(i64 %a, i64 %b) {
; CHECK-LABEL: f8:
; CHECK: risbg %r2, %r3, 31, 191, 0
; CHECK: br %r14
%and = and i64 %b, 8589934591
ret i64 %and
}
; Check the lowest NIHH value outside the RISBG range (0x0002ffff_ffffffff).
define i64 @f9(i64 %a) {
; CHECK-LABEL: f9:
; CHECK: nihh %r2, 2
; CHECK: br %r14
%and = and i64 %a, 844424930131967
ret i64 %and
}
; Check the highest NIHH value outside the RISBG range (0xfffaffff_ffffffff).
define i64 @f10(i64 %a) {
; CHECK-LABEL: f10:
; CHECK: nihh %r2, 65530
; CHECK: br %r14
%and = and i64 %a, -1407374883553281
ret i64 %and
}
; Check the highest useful NIHF value (0xfffefffe_ffffffff).
define i64 @f11(i64 %a) {
; CHECK-LABEL: f11:
; CHECK: nihf %r2, 4294901758
; CHECK: br %r14
%and = and i64 %a, -281479271677953
ret i64 %and
}
; Check the lowest NIHL value outside the RISBG range (0xffff0002_ffffffff).
define i64 @f12(i64 %a) {
; CHECK-LABEL: f12:
; CHECK: nihl %r2, 2
; CHECK: br %r14
%and = and i64 %a, -281462091808769
ret i64 %and
}
; Check the highest NIHL value outside the RISBG range (0xfffffffa_ffffffff).
define i64 @f13(i64 %a) {
; CHECK-LABEL: f13:
; CHECK: nihl %r2, 65530
; CHECK: br %r14
%and = and i64 %a, -21474836481
ret i64 %and
}
; Check the lowest NILF value outside the RISBG range (0xffffffff_00000002).
define i64 @f14(i64 %a) {
; CHECK-LABEL: f14:
; CHECK: nilf %r2, 2
; CHECK: br %r14
%and = and i64 %a, -4294967294
ret i64 %and
}
; Check the lowest NILH value outside the RISBG range (0xffffffff_0002ffff).
define i64 @f15(i64 %a) {
; CHECK-LABEL: f15:
; CHECK: nilh %r2, 2
; CHECK: br %r14
%and = and i64 %a, -4294770689
ret i64 %and
}
; Check the next value up, which must use NILF.
define i64 @f16(i64 %a) {
; CHECK-LABEL: f16:
; CHECK: nilf %r2, 196608
; CHECK: br %r14
%and = and i64 %a, -4294770688
ret i64 %and
}
; Check the highest NILH value outside the RISBG range (0xffffffff_fffaffff).
define i64 @f17(i64 %a) {
; CHECK-LABEL: f17:
; CHECK: nilh %r2, 65530
; CHECK: br %r14
%and = and i64 %a, -327681
ret i64 %and
}
; Check the maximum useful NILF value (0xffffffff_fffefffe).
define i64 @f18(i64 %a) {
; CHECK-LABEL: f18:
; CHECK: nilf %r2, 4294901758
; CHECK: br %r14
%and = and i64 %a, -65538
ret i64 %and
}
; Check the lowest NILL value outside the RISBG range (0xffffffff_ffff0002).
define i64 @f19(i64 %a) {
; CHECK-LABEL: f19:
; CHECK: nill %r2, 2
; CHECK: br %r14
%and = and i64 %a, -65534
ret i64 %and
}
; Check the highest NILL value outside the RISBG range.
define i64 @f20(i64 %a) {
; CHECK-LABEL: f20:
; CHECK: nill %r2, 65530
; CHECK: br %r14
%and = and i64 %a, -6
ret i64 %and
}
|
